My 68 chevelle sat for two years during it restoration, and now it is running but the heater is not working, where do u think I should begin to look? Maybe start with checking the fuses or electrical? Not sure where to begin to look, anyone have this problem before? Any help would be appreciated.
My 68 chevelle sat for two years during it restoration, and now it is running but the heater is not working, where do u think I should begin to look? Maybe start with checking the fuses or electrical? Not sure where to begin to look, anyone have this problem before? Any help would be appreciated.
First thing as you said check the fuses, That blower location is a "PITA" don't think you can get to it to jump the wires on it to see if it will work. Does the heater controls seem to be working when you move it to set the heater ?
hey just read some threads about a vaccum canister on the p****enger side firewall, I did have a vaccum canister mounted there before i remove it during engine removal, and did not put it back on. Maybe this is the problem I am having with my heater not operating. Is this right? I always wondered what this canister was for, could this be the problem. Does the heater need this vaccum canister to initialize operation?
that canister simply 'stores' vacuum so that when you are WOT or whatever and there is little engine vacuum available, your A/C controls don't start doing their own thing
by the way.. the easiest way to get to the blower motor is to remove the outer fender...
it's possible to do it w/o removing the fender.. but you had better be a contortionist!!!
this is a picture of what you are dealing with.. but w/o all the sheetmetal in the way.. yes, this is my monte carlo, but from the firewall back it's basicly just a fancy chevelle
I don't know if the '68's were wired like the later vehicles, but on the newer ones an A/C equipped car has a separate high speed blower fuse and a relay mounted under the hood. The 30 amp fuse is inline in a wire running across the firewall, and the relay is mounted next to the blower motor resistors.
If you power up that high speed blower relay by putting 12 volts on the low side, and the 30 amp fuse that feeds the high amp side is good, you can get the blower to run on high even if the dash switch is bad.
yeah that's how the 70-72 monte's are wired.. and in fact, that's exactly how I use my blower fan right now
i just put a toggle with some pig tails into the harness in the dash tho :>
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